Collatz in Ruby in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling 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PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st Lydxn 🇨🇦 1,000 49 39ms 4 May 2022 1st JayXon 🇺🇸 1,000 49 43ms 17 Oct 2022 1st GrayJoKing 🇦🇺 1,000 49 49ms 15 Nov 2022 1st radarek 🇵🇱 1,000 49 219ms 26 Aug 2025 5th canissimia 🇦🇶 980 50 41ms 5 May 2022 5th ovs-code 🇩🇪 980 50 279ms 7 May 2022 5th sisyphus-ppcg 🇦🇺 980 50 37ms 20 Feb 2023 5th Steffan153 🇫🇮 980 50 42ms 20 Jul 2024 5th sean-niemann 🇺🇸 980 50 41ms 9 Jun 2025 5th pardouin 🇫🇷 980 50 50ms 22 Aug 2025 11th nwellnhof 🇩🇪 961 51 50ms 4 May 2022 11th primo-ppcg 🇹🇭 961 51 43ms 6 May 2022 11th janlelis 961 51 39ms 10 May 2022 11th Natanaelel 🇸🇪 961 51 39ms 2 Jun 2022 15th shinh 942 52 42ms 29 Jun 2022 16th MeWhenI 🇻🇦 925 53 41ms 1 Jun 2022 16th stefangimmillaro 925 53 38ms 2 Oct 2022 16th Haksell 🇦🇶 925 53 40ms 22 Feb 2023 19th Andriamanitra 🇫🇮 907 54 42ms 21 Jul 2022 19th jared-hughes 907 54 39ms 12 Sep 2022 19th OhmNomNom 907 54 47ms 7 Oct 2022 19th olleicua 🇺🇸 907 54 41ms 21 Jan 2024 19th LostSyntax21 🇬🇧 907 54 41ms 12 Mar 2025 19th AbrahamJLR 🇻🇪 907 54 40ms 4 Jun 2025 19th vishal-mohanty 907 54 42ms 25 Aug 2025 26th SirBogman 🇺🇸 891 55 43ms 5 May 2022 26th olivermrose 🇺🇸 891 55 45ms 6 May 2022 26th 4hg 🇺🇸 891 55 46ms 24 Aug 2022 26th DialFrost 🇸🇬 891 55 50ms 1 Jan 2023 26th error256 891 55 43ms 4 May 2024 31st ChiefChippy2 875 56 39ms 4 May 2022 31st aksyristos 875 56 41ms 29 Jan 2023 31st 3dm4n 🇫🇮 875 56 52ms 11 Mar 2024 31st anter69 🇭🇺 875 56 39ms 18 Sep 2024 31st lgrandco 875 56 41ms 9 Oct 2024 36th Irratix 🇳🇱 860 57 43ms 29 Jun 2022 37th tkr-sh 🇫🇷 845 58 53ms 8 Sep 2022 37th annaproxy 845 58 49ms 15 Sep 2023 37th Shanethegamer 🇺🇸 845 58 44ms 25 Dec 2023 37th emgordon154 845 58 46ms 26 Jul 2024 37th tatzyr 🇯🇵 845 58 46ms 10 Dec 2024 42nd rniii 831 59 48ms 26 Mar 2024 42nd ejini6969 831 59 39ms 13 Jun 2025 44th DaCuteRaccoon 817 60 43ms 5 May 2022 44th razetime 817 60 55ms 22 Aug 2022 44th janbehrens 🇩🇪 817 60 40ms 17 May 2023 47th fynnkroeger 803 61 51ms 6 Jan 2023 47th aaronze 🇦🇺 803 61 42ms 17 Sep 2023 49th purp 790 62 40ms 13 Aug 2022 50th RuyiLi 778 63 42ms 21 Feb 2024 50th dokutan 778 63 47ms 15 Jul 2024 52nd Waffle3z 766 64 44ms 6 May 2022 53rd KatieLG 🇬🇧 754 65 46ms 26 Dec 2023 54th Feniske 🇫🇷 742 66 39ms 8 Oct 2022 55th snoozingnewt 🇺🇸 721 68 44ms 11 Sep 2023 55th adoxography 721 68 39ms 2 Mar 2024 57th vrnprkh 700 70 50ms 30 Mar 2023 57th truisseaux 700 70 36ms 12 Apr 2024 59th pfysches-boop 690 71 43ms 6 Aug 2023 59th madeforlosers 690 71 38ms 7 Nov 2024 61st beergit 681 72 35ms 7 Aug 2024 62nd Ohh-n 671 73 43ms 9 Aug 2025 63rd jamespeilunli 653 75 39ms 4 Jul 2022 64th kmathis22 628 78 38ms 5 Sep 2025 65th hollma 605 81 40ms 20 Oct 2023 66th catflip 590 83 43ms 30 Nov 2023 67th msbranicky 576 85 42ms 10 Oct 2023 68th Betuaredead 527 93 38ms 5 Jan 2023 69th yobatm 500 98 35ms 22 Aug 2025 70th sreedevk 🇺🇸 485 101 45ms 4 Dec 2022 71st JRaspass 🇬🇧 15 3,231 31ms 4 May 2022 71st KatieLG-Transpiler 🇬🇧 15 3,231 38ms 24 Jun 2022 71st retrohun 15 3,231 36ms 27 Dec 2022 71st HumanoidCPU 15 3,231 34ms 3 May 2024 71st Mabeloid 🇳🇴 15 3,231 35ms 17 Sep 2024 1–75 of 76 Next Last